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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">simulate_motion</span><span data-if="c" style="display:none;">simulate_motion</span><span data-if="cpp" style="display:none;">SimulateMotion</span><span data-if="dotnet" style="display:none;">SimulateMotion</span><span data-if="python" style="display:none;">simulate_motion</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">simulate_motion</span><span data-if="c" style="display:none;">simulate_motion</span><span data-if="cpp" style="display:none;">SimulateMotion</span><span data-if="dotnet" style="display:none;">SimulateMotion</span><span data-if="python" style="display:none;">simulate_motion</span></code> — Simulation of (linearly) motion blur.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>simulate_motion</b>(<a href="#Image"><i>Image</i></a> : <a href="#MovedImage"><i>MovedImage</i></a> : <a href="#Blurring"><i>Blurring</i></a>, <a href="#Angle"><i>Angle</i></a>, <a href="#Type"><i>Type</i></a> : )</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>simulate_motion</b>(const Hobject <a href="#Image"><i>Image</i></a>, Hobject* <a href="#MovedImage"><i>MovedImage</i></a>, double <a href="#Blurring"><i>Blurring</i></a>, const Hlong <a href="#Angle"><i>Angle</i></a>, const Hlong <a href="#Type"><i>Type</i></a>)</code></p>
<p>
<code>Herror <b>T_simulate_motion</b>(const Hobject <a href="#Image"><i>Image</i></a>, Hobject* <a href="#MovedImage"><i>MovedImage</i></a>, const Htuple <a href="#Blurring"><i>Blurring</i></a>, const Htuple <a href="#Angle"><i>Angle</i></a>, const Htuple <a href="#Type"><i>Type</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>SimulateMotion</b>(const HObject&amp; <a href="#Image"><i>Image</i></a>, HObject* <a href="#MovedImage"><i>MovedImage</i></a>, const HTuple&amp; <a href="#Blurring"><i>Blurring</i></a>, const HTuple&amp; <a href="#Angle"><i>Angle</i></a>, const HTuple&amp; <a href="#Type"><i>Type</i></a>)</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>::<b>SimulateMotion</b>(double <a href="#Blurring"><i>Blurring</i></a>, Hlong <a href="#Angle"><i>Angle</i></a>, Hlong <a href="#Type"><i>Type</i></a>) const</code></p>
</div>
<div data-if="com" style="display:none;"></div>
<div data-if="dotnet" style="display:none;">
<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>SimulateMotion</b>(<a href="HObject.html">HObject</a> <a href="#Image"><i>image</i></a>, out <a href="HObject.html">HObject</a> <a href="#MovedImage"><i>movedImage</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Blurring"><i>blurring</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Angle"><i>angle</i></a>, <a href="HTuple.html">HTuple</a> <a href="#Type"><i>type</i></a>)</code></p>
<p>
<code><a href="HImage.html">HImage</a> <a href="HImage.html">HImage</a>.<b>SimulateMotion</b>(double <a href="#Blurring"><i>blurring</i></a>, int <a href="#Angle"><i>angle</i></a>, int <a href="#Type"><i>type</i></a>)</code></p>
</div>
<div data-if="python" style="display:none;">
<p>
<code>def <b>simulate_motion</b>(<a href="#Image"><i>image</i></a>: HObject, <a href="#Blurring"><i>blurring</i></a>: float, <a href="#Angle"><i>angle</i></a>: int, <a href="#Type"><i>type</i></a>: int) -&gt; HObject</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p><code><span data-if="hdevelop" style="display:inline">simulate_motion</span><span data-if="c" style="display:none">simulate_motion</span><span data-if="cpp" style="display:none">SimulateMotion</span><span data-if="com" style="display:none">SimulateMotion</span><span data-if="dotnet" style="display:none">SimulateMotion</span><span data-if="python" style="display:none">simulate_motion</span></code> simulates blurring caused by a relative motion
between the object and the camera during exposure. The simulated motion
moves along an even. <a href="#Angle"><i><code><span data-if="hdevelop" style="display:inline">Angle</span><span data-if="c" style="display:none">Angle</span><span data-if="cpp" style="display:none">Angle</span><span data-if="com" style="display:none">Angle</span><span data-if="dotnet" style="display:none">angle</span><span data-if="python" style="display:none">angle</span></code></i></a> fixes its direction by specifying
the angle between the motion direction and the x-axis (anticlockwise,
measured in degrees).
Simulation is done by a convolution of the image with a blurring specific
impulse response. The convolution is realized by multiplication in the
Fourier domain.
<code><span data-if="hdevelop" style="display:inline">simulate_motion</span><span data-if="c" style="display:none">simulate_motion</span><span data-if="cpp" style="display:none">SimulateMotion</span><span data-if="com" style="display:none">SimulateMotion</span><span data-if="dotnet" style="display:none">SimulateMotion</span><span data-if="python" style="display:none">simulate_motion</span></code> offers five prototypes of impulse responses
conforming to different acceleration behaviors. <a href="#Type"><i><code><span data-if="hdevelop" style="display:inline">Type</span><span data-if="c" style="display:none">Type</span><span data-if="cpp" style="display:none">Type</span><span data-if="com" style="display:none">Type</span><span data-if="dotnet" style="display:none">type</span><span data-if="python" style="display:none">type</span></code></i></a> allows
to choose one of the following PSF prototypes:
</p>
<ol>
<li>
<p> reverse ramp        (crude model for acceleration)
</p>
</li>
<li>
<p> reverse trapezoid   (crude model for high acceleration)
</p>
</li>
<li>
<p> square pulse        (exact model for constant velocity), this is
default
</p>
</li>
<li>
<p> forward trapezoid   (crude model for deceleration)
</p>
</li>
<li>
<p> forward ramp        (crude model for high deceleration)
</p>
</li>
</ol>
<p>
(default value is 3.)
</p>
<p>The simulated blurring affects all part of the image uniformly.
<a href="#Blurring"><i><code><span data-if="hdevelop" style="display:inline">Blurring</span><span data-if="c" style="display:none">Blurring</span><span data-if="cpp" style="display:none">Blurring</span><span data-if="com" style="display:none">Blurring</span><span data-if="dotnet" style="display:none">blurring</span><span data-if="python" style="display:none">blurring</span></code></i></a> controls the extent of blurring. It specifies the
number of pixels (lying one after another) that are affected by the
blurring. This number is determined by velocity of the motion and
exposure time. If <a href="#Blurring"><i><code><span data-if="hdevelop" style="display:inline">Blurring</span><span data-if="c" style="display:none">Blurring</span><span data-if="cpp" style="display:none">Blurring</span><span data-if="com" style="display:none">Blurring</span><span data-if="dotnet" style="display:none">blurring</span><span data-if="python" style="display:none">blurring</span></code></i></a> is a negative number, an adequate
blurring in reverse direction is simulated. If <a href="#Angle"><i><code><span data-if="hdevelop" style="display:inline">Angle</span><span data-if="c" style="display:none">Angle</span><span data-if="cpp" style="display:none">Angle</span><span data-if="com" style="display:none">Angle</span><span data-if="dotnet" style="display:none">angle</span><span data-if="python" style="display:none">angle</span></code></i></a> is a
negative number, it is interpreted clockwise. If <a href="#Angle"><i><code><span data-if="hdevelop" style="display:inline">Angle</span><span data-if="c" style="display:none">Angle</span><span data-if="cpp" style="display:none">Angle</span><span data-if="com" style="display:none">Angle</span><span data-if="dotnet" style="display:none">angle</span><span data-if="python" style="display:none">angle</span></code></i></a> exceeds
360 or falls below -360, it is transformed modulo(360) in an adequate number
between [0..360] resp.  [-360..0].</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  
    <li>在元组级别自动并行化。</li>
    <li>在图像通道级别自动并行化。</li>
  
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="Image" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></b> (input_object)  </span><span>(multichannel-)image(-array) <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject</span> (byte / direction / cyclic / int1 / int2 / uint2 / int4 / real)</span>
</div>
<p class="pardesc">image to be blurred.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="MovedImage" class="parname"><b><code><span data-if="hdevelop" style="display:inline">MovedImage</span><span data-if="c" style="display:none">MovedImage</span><span data-if="cpp" style="display:none">MovedImage</span><span data-if="com" style="display:none">MovedImage</span><span data-if="dotnet" style="display:none">movedImage</span><span data-if="python" style="display:none">moved_image</span></code></b> (output_object)  </span><span>image <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject *</span> (real)</span>
</div>
<p class="pardesc">motion blurred image.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Blurring" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Blurring</span><span data-if="c" style="display:none">Blurring</span><span data-if="cpp" style="display:none">Blurring</span><span data-if="com" style="display:none">Blurring</span><span data-if="dotnet" style="display:none">blurring</span><span data-if="python" style="display:none">blurring</span></code></b> (input_control)  </span><span>real <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">float</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (real)</span><span data-if="dotnet" style="display:none"> (<i>double</i>)</span><span data-if="cpp" style="display:none"> (<i>double</i>)</span><span data-if="c" style="display:none"> (<i>double</i>)</span></span>
</div>
<p class="pardesc">extent of blurring.</p>
<p class="pardesc"><span class="parcat">Default:
      </span>20.0</p>
<p class="pardesc"><span class="parcat">Suggested values:
      </span>5.0, 10.0, 20.0, 30.0, 40.0</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Angle" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Angle</span><span data-if="c" style="display:none">Angle</span><span data-if="cpp" style="display:none">Angle</span><span data-if="com" style="display:none">Angle</span><span data-if="dotnet" style="display:none">angle</span><span data-if="python" style="display:none">angle</span></code></b> (input_control)  </span><span>integer <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">int</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (integer)</span><span data-if="dotnet" style="display:none"> (<i>int</i> / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>Hlong</i>)</span><span data-if="c" style="display:none"> (<i>Hlong</i>)</span></span>
</div>
<p class="pardesc">Angle between direction of motion and x-axis
(anticlockwise).</p>
<p class="pardesc"><span class="parcat">Default:
      </span>0</p>
<p class="pardesc"><span class="parcat">Suggested values:
      </span>0, 45, 90, 180, 270</p>
</div>
  <div class="par">
<div class="parhead">
<span id="Type" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Type</span><span data-if="c" style="display:none">Type</span><span data-if="cpp" style="display:none">Type</span><span data-if="com" style="display:none">Type</span><span data-if="dotnet" style="display:none">type</span><span data-if="python" style="display:none">type</span></code></b> (input_control)  </span><span>integer <code>→</code> <span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">int</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (integer)</span><span data-if="dotnet" style="display:none"> (<i>int</i> / </span><span data-if="dotnet" style="display:none">long)</span><span data-if="cpp" style="display:none"> (<i>Hlong</i>)</span><span data-if="c" style="display:none"> (<i>Hlong</i>)</span></span>
</div>
<p class="pardesc">impulse response of motion blur.</p>
<p class="pardesc"><span class="parcat">Default:
      </span>3</p>
<p class="pardesc"><span class="parcat">List of values:
      </span>1, 2, 3, 4, 5</p>
</div>
<h2 id="sec_result">结果</h2>
<p><code><span data-if="hdevelop" style="display:inline">simulate_motion</span><span data-if="c" style="display:none">simulate_motion</span><span data-if="cpp" style="display:none">SimulateMotion</span><span data-if="com" style="display:none">SimulateMotion</span><span data-if="dotnet" style="display:none">SimulateMotion</span><span data-if="python" style="display:none">simulate_motion</span></code> returns <TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
     if all parameters are
correct.  If the input is empty <code><span data-if="hdevelop" style="display:inline">simulate_motion</span><span data-if="c" style="display:none">simulate_motion</span><span data-if="cpp" style="display:none">SimulateMotion</span><span data-if="com" style="display:none">SimulateMotion</span><span data-if="dotnet" style="display:none">SimulateMotion</span><span data-if="python" style="display:none">simulate_motion</span></code> returns with
an error message.</p>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="gen_psf_motion.html"><span data-if="hdevelop" style="display:inline">gen_psf_motion</span><span data-if="c" style="display:none">gen_psf_motion</span><span data-if="cpp" style="display:none">GenPsfMotion</span><span data-if="com" style="display:none">GenPsfMotion</span><span data-if="dotnet" style="display:none">GenPsfMotion</span><span data-if="python" style="display:none">gen_psf_motion</span></a></code>, 
<code><a href="gen_psf_motion.html"><span data-if="hdevelop" style="display:inline">gen_psf_motion</span><span data-if="c" style="display:none">gen_psf_motion</span><span data-if="cpp" style="display:none">GenPsfMotion</span><span data-if="com" style="display:none">GenPsfMotion</span><span data-if="dotnet" style="display:none">GenPsfMotion</span><span data-if="python" style="display:none">gen_psf_motion</span></a></code>
</p>
<h2 id="sec_successors">可能的后置算子</h2>
<p>
<code><a href="simulate_defocus.html"><span data-if="hdevelop" style="display:inline">simulate_defocus</span><span data-if="c" style="display:none">simulate_defocus</span><span data-if="cpp" style="display:none">SimulateDefocus</span><span data-if="com" style="display:none">SimulateDefocus</span><span data-if="dotnet" style="display:none">SimulateDefocus</span><span data-if="python" style="display:none">simulate_defocus</span></a></code>, 
<code><a href="wiener_filter.html"><span data-if="hdevelop" style="display:inline">wiener_filter</span><span data-if="c" style="display:none">wiener_filter</span><span data-if="cpp" style="display:none">WienerFilter</span><span data-if="com" style="display:none">WienerFilter</span><span data-if="dotnet" style="display:none">WienerFilter</span><span data-if="python" style="display:none">wiener_filter</span></a></code>, 
<code><a href="wiener_filter_ni.html"><span data-if="hdevelop" style="display:inline">wiener_filter_ni</span><span data-if="c" style="display:none">wiener_filter_ni</span><span data-if="cpp" style="display:none">WienerFilterNi</span><span data-if="com" style="display:none">WienerFilterNi</span><span data-if="dotnet" style="display:none">WienerFilterNi</span><span data-if="python" style="display:none">wiener_filter_ni</span></a></code>
</p>
<h2 id="sec_see">参考其它</h2>
<p>
<code><a href="gen_psf_motion.html"><span data-if="hdevelop" style="display:inline">gen_psf_motion</span><span data-if="c" style="display:none">gen_psf_motion</span><span data-if="cpp" style="display:none">GenPsfMotion</span><span data-if="com" style="display:none">GenPsfMotion</span><span data-if="dotnet" style="display:none">GenPsfMotion</span><span data-if="python" style="display:none">gen_psf_motion</span></a></code>, 
<code><a href="simulate_defocus.html"><span data-if="hdevelop" style="display:inline">simulate_defocus</span><span data-if="c" style="display:none">simulate_defocus</span><span data-if="cpp" style="display:none">SimulateDefocus</span><span data-if="com" style="display:none">SimulateDefocus</span><span data-if="dotnet" style="display:none">SimulateDefocus</span><span data-if="python" style="display:none">simulate_defocus</span></a></code>, 
<code><a href="gen_psf_defocus.html"><span data-if="hdevelop" style="display:inline">gen_psf_defocus</span><span data-if="c" style="display:none">gen_psf_defocus</span><span data-if="cpp" style="display:none">GenPsfDefocus</span><span data-if="com" style="display:none">GenPsfDefocus</span><span data-if="dotnet" style="display:none">GenPsfDefocus</span><span data-if="python" style="display:none">gen_psf_defocus</span></a></code>
</p>
<h2 id="sec_references">References</h2>
<p>

Anil K. Jain:Fundamentals of Digital Image Processing, Prentice-Hall
International Inc., Englewood Cliffs, New Jersey, 1989
<br>
M. Lückenhaus:“Grundlagen des Wiener-Filters und seine Anwendung in
der Bildanalyse”; Diplomarbeit;
Technische Universität München, Institut für Informatik;
Lehrstuhl Prof. Radig; 1995.
<br>
Kha-Chye Tan, Hock Lim, B. T. G. Tan:“Restoration of Real-World
Motion-Blurred Images”;S. 291-299 in: CVGIP Graphical Models and
Image Processing, Vol. 53, No. 3, May 1991
</p>
<h2 id="sec_module">模块</h2>
<p>
Foundation</p>
<!--OP_REF_FOOTER_START-->
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